POLYPOREAE OF SOUTH AFRICA. 291 



3. Hexagona speciosa, Fr. 



Pileus sessile, woody, firm and rigid, dimidiate, applanate, 

 concliate or cupshaped, at times somewhat decurrent behind, 8 cm. 

 to 18 cm. by 5 cm. to 12 cm. by 0-6 cm. to 4 cm., thickest behind, 

 narrowly attached; surface with a thin crust zoned to slightly fur- 

 rowed, fawn coloured, smooth to tuberculate, margin thick or thin, 

 undulate; context 0-2 cm. to 1-5 cm. thick, reddish-brown, firm, 

 corky, to subligneous; tubes 4 mm. to 12 mm. long, concolorous 

 with context or glaucous within, mouths subcircular to hexagonal, 

 3 mm. to 4 mm. diam. ; edges thick or thin, at times lacerate; fawn 

 to reddish-brown; setae absent; hyphae 3-7jx to 7-4/a diam. 



Distribution. — Found around Durban, Natal, by the writer, 

 and in the Ngoye Forest, Zululand, by W. Hay garth ; from 

 Rhodesia by C. Swynnerton. The zones are at times coloured 

 reddish-brown. 



4. Hexagona pobeguini, Hariot. 



Pileus dimidiate, applanate, woody, 12 cm. to 20 cm. by 7 cm. 

 to 13 cm. by 0-5 cm. to 2-5 cm., surface grey to brown, minutely 

 pubescent, becoming glabrous or scabrid with age and frequently 

 somewhat cracked, concentrically zoned and sulcate, the zones at 

 times different shades of brown; margin thick or thin, undulate; 

 context 2 mm. to 4 mm. thick, reddish-brown, corky, firm; tubes 

 0-3 cm. to 2 cm. long, concolorous with context; mouths 2 to 3 to 

 the cm., subrotund to hexagonal, irregular; edges firm, reddish - 

 brown, velutinate; setae present and very prominent. 



Distribution- — In the Woodbush, Zoutpansberg (Herb. 

 Division Botany, 1317 and 1319). 



Distinguishable from II. speciosa by the presence of setae. 



Favolus, Fries. 



Plants epixylous, annual; pileus more or less laterally stipitate, 

 fleshy-tough when fresh; context white, pores angular or hexagonal, 

 radially elongated; stipe lateral; spores white; setae absent or 

 present (F. megaloporus). 



KEY TO THE SPECIES. 



1. Setae present. 



Setae in hymenium aculeate and with aculeate spines. 



F. megaloporus 1 

 1. Setae absent. 



Tubes up to 3 mm. long; mouths 3 mm. to 5 mm. by 

 0-8 mm. to 1 mm. F. brasiliensis 2 



1. Favolus megaloporus (Mont), Bres. 



Plants annual, laterally stipitate; pileus coriaceous, applanate, 

 spathulate or flabelliform, 1-5 mm. to 5 mm. by 1-5 mm. to 3-5 mm. 

 by 0-4 mm.; surface white to reddish brown, glabrous, striate; 

 margin thin, incurved in drying; context 0-8 mm. to 2 mm. white 



